Ammonium Sulfate — China — C-570-050

An AD/CVD measure concerning ammonium sulfate is a U.S. trade remedy that may apply to covered imports of this fertilizer product. “AD” means antidumping: the government may impose additional duties when imports are found to be sold in the United States at less than fair value. “CVD” means countervailing duty: additional duties may apply when imports benefit from certain foreign-government subsidies. These duties are separate from ordinary customs duty.

The measure typically affects importers, manufacturers, exporters, and distributors handling ammonium sulfate from the countries and producers or exporters identified in the official order. Coverage depends on the product’s technical characteristics and the order’s scope, not simply the product name or the tariff classification. An importer may need to pay cash deposits at entry and could later face a different final liability after administrative review. Correct classification, scope review, and entry documentation are therefore important; a customs broker or trade lawyer may be needed for difficult coverage questions.

What to check

• Check the official order’s scope language, including chemical composition, physical form, grade, and exclusions; do not rely on the product name alone.
• Confirm the product’s HTSUS classification, but remember that an HTSUS number is an identification aid and does not by itself determine whether the order applies.
• Identify the manufacturer, exporter, and country of origin, because AD/CVD treatment can vary by source and by company-specific findings.
• Ask your customs broker to verify the required AD/CVD case information, cash-deposit instructions, and entry-reporting requirements before importation.
• Keep product specifications, invoices, origin records, and producer/exporter information; seek a formal scope ruling or professional advice if coverage is uncertain.